-(으)ㄹ 만하다

Generally, -(으)ㄹ 만하다 means that there is enough reason or justification for a certain situation or that something is doable or possible but mainly in the sense of being "bearable" to do.

Examples

가다

→ 갈 만하다

= to be possible to go

= to be worth going (and checking out the place)

= there is enough justifiable reason for one to go

먹다

→ 먹을 만하다

= to be edible

= to taste okay

= the taste is acceptable

늦다

→ 늦을 만하다

= to be forgivable for being late

= there is enough reason for being late

-(으)ㄹ 만하다 

놀라다

→ 놀랄 만하다

= to be natural to be surprised/shocked

= there is enough reason for being surprised/shocked

Sample sentences

1. 그럴 만해요.

= It's understandable to be so.

= It's possible.

= There is enough reason for it to be so.

2. 그 사람은 인기가 있을 만해요.

= There is enough reason that he is popular.

= It's understandable why he is popular.

3. 이 책 읽을 만해요?

= Is this book worth reading?

= Is this book good?

= Do you recommend this book?

4. 괜찮아요. 참을 만해요.

= I'm ok. It's endurable.

= I'm okay. It's bearable.

5. 가족끼리 한 번쯤 갈 만해요.

= (The place) is worth visiting once (or twice) with family.